Insulated pipe anchor



Sept 23, 1952 T. F. M. WILLIAMSON 2,611,567

INSULTED PIPE: ANCHOR Filed March 1s, 194e 4 .Ln-'.z 4 INVENTOR.

23 2l v THOMAS F. M. WILLIAMSON Aff. BY W L"'"" "f" /AT/Tomvfy Patented Sept. 23, 1952 Thomas F. M. Williamson, San Francisco, Calif., K

assigncr to Alexander H. Isenberg, Woodside,

Calif.

Application March 18, 1946, Serial No. 655,294

3 Claims.

This invention relates to thermal insulated pipe of the general type wherein a metal pipe is surrounded With thermal insulation, and preferably surrounding this is a heavy layer of water sealing compound such as solid asphalt, tar, or pitch. and a metal or other casing surrounds the pitch (all as generally shown in my Patents Nos. 2,478,552 and 2,532,587) and the present invention has for its principal object the provision of means for anchoring theinner metal pipe of the assembly so that all longitudinal expansion and contraction of the pipe in use will take place on one or both sides of the anchored point.

Other features and advantages of the invention will appear in the following description and vaccompanying drawings.

In the drawings- Fig. 1 is a longitudinal section of an insulated pipe of the character described and showing my novel anchorage arrangement applied thereto.

Fig. 2 is a cross section of the assemblage taken along the line 2-2 of Fig. l.

Fig. 3 is a view similar to that of Fig. 1 but showing a modified form of the anchoring arrangement.

In the drawings, l is the inner pipe, generally a steam conducting pipe or one used for conveying other relatively hot or cold fluids, 2 is the thermal insulation closely surrounding the pipe, and which may be of any suitable kind of thermal insulating material, tho preferably is the conventional magnesia base steam pipe packing applied in split sections to the pipe and wrapped with one or more layers 2of cloth, 4 is athick layer of solid asphalt, tar, pitch, or the like which surrounds the thermal insulation to prevent the ingress of water, 5 is the sheet metal tubular casing which surrounds the pitch, while 3 is one of any type of spacer or spacing ring used at intervals along the assemblage to denitely space the sheet metal casing 5 from the thermal insulation to provide a space for longitudinal and circumferential ilow of the pitch 4, and which is poured in while in molten condition through the end of the space or through one or more side openings in the casing, not shown, but well understood in the art.

All the above features are old and wellknown. and my improvement applied thereto comprises a piece of metal such as a substantially rigid anchor plate of steel (1 in Figs. 1 and 2, and 8 in Fig. 3) extending at right angles or transversely to the pipe and casing, and which plate may be in one or two pieces, provided with a central opening or notches to pass conducting pipe I therethrough. said pipe being rmly welded thereto as at 9.

Steel plate 1 may be round or rectangular or any other shape, an oblong form being shown for the plate in Fig. 2, and which plate is of a size to extend outward beyond the casing 5,fwhich may be cut back to terminate some distance from the plate 'I as indicated at 5', while abutting the plate 'I at opposite sides are twokrelatively short lengths of heavysteel tubes or sleeves, such as well casing I0 preferably of Van internal diameter to fit and telescope nicely or-snugly over the ends of the casing 5 for a distance as indicated in Fig. 1. Sleeves I0 are welded at their inner opposed confronting ends to plate 'I vas at II, and welded or soldered at their outer ends to the molding casing 5 as at I2, and additionally maybe screwed orvspot welded as at I3, to the casing ends which they overlap, so as to make a waterproof joint. The platey 1 and the tubular sleeves Il) are preferably all galvanized so 4as to form a rust proof permanent anchor unit.

Within the anchor unit the asphalt or pitch layer 4 is terminated a short distance from anchor plate 'I and the space packed with additional thermal insulation 2, preferably before applying the sleeves. This is done to prevent transmitting heat to the asphalt. Preformed block insulation may be used if desired.

Obviously the construction thus far set out could be embedded in any concrete wall or block to form an anchor for the pipe I, but I prefer to pass the pipe assembly over or free of embedding in a suitable concrete anchor block I5 as shown in Figs. l and 2 and project iron or steel legs I6 at opposite sides of the conduit unit into the concrete and which legs are welded or otherwise xedly securedas at Il to the projecting plate 1,' as this permits of easier removal should it ever be required, as the legs are of substantially less width than the width of the plate and may be easily cut oif with a torch.

After the anchorage is completed as shown in the drawings the unit is preferably covered with finely divided thermal insulating material such as crushed kieselguhr or the like, and the earth fillings applied. Y

While the anchorage plate I is directly connected with the steam conducting pipe in the design shown in Figs. 1 and 2, nevertheless with the completed installation there is but little thermal loss.

In the modied form shown in Fig. 3 the anchor plate 8 is thermally insulated from the outside,

ject inward to contact and embrace the thermal packing 2, and the asphalt filling preferably eX- tends to and is sealed to theoutsidesof the plates i8, and inner surface of sleeves 'It as by pouring through suitable openings (not shown and later closed). The outer ends of the sleevesl preferably telescope over the casing ends 5 and ar soldered or welded thereto as at 2li.

With such a construction, it will be seen that any anchoring of the projecting housing 'i3- '22 against longitudinal movement will also lock the pipe I against such movement,`eventho thermaliylinsulated therefrom. Y Y

Such anchoring of the housing rn-aybe carried out with legs or extensions Welded tothe Yhousing projecting vinto the concrete anchor block as eX- plained'and shownvfofr Figs. A1 Vand 2, or aconcrete anchor blocl; f5' may 'be extendeci upwardly to engage or even surroundthe housing i3-22 as D indicated in Fig; `3 iides'ied.

Having thus described -tworndiiica`tiohs of 'my improved anchoragemeans 'for insulated pipe, Lit will be obvious thatwhilel show it applied tafan assembly vcontainingbut one pipefit 'is Aequally Y applicable' `to such assemblies containing "more than" one pipe as shown inmysaidcopendin'g application abovementionedyit being also obvious that various changesof detail maybe 'made Within the scope of thesinvention"and my appended claims.' i f l. In a conduit pipe assembly having'afeonduit unit including `an exteriorly Yt Y )rmally insulated metal conducting pipe enclosed-inspaced relation within afrelatively ythirrsheet*metal tubular outer vcasing anda jacketofmoisture impervious niaterial therebetween, an :anchorage meansjcoinprising a metal plate having an opening therethrough through which 'the conducting A'pipe passea'said plate being secured tofsaid Vconveyor pipe to prevent Yrelativei'movement therebetween and said plate extending transversely of the conu duit radially outwardly beyond'the diameter of the casing, apair'of relatively short sleeves'jof thicker body material than 'said casing, 4each of which at one of its ends'abutstherespectiveopposite sides of the plate and atjits vother endsnugly telescopes an adjacent endof the casing,`said sleeves being imperviously sealed tothe plate 'at their opposed 'conirontingends and 'sealed at their opposite ends to theadjacent casing, the moisture impervious material terminating in spaced relation to said anchor plate,`and thermal insulating material in the space betweenV the anchor plate and the adjacent'terminal 'en 'd of the moisture impervious material.

2. In a conduit pipe assembly, 'aconduit'unit including an exteriorly thermally insulated metal conducting pipe enclosed within a moisture irnpervious jacket of material which is uid when heated and solidiiies when cooled to normal temperature, said jacket being surrounded by a tubular outer casing, circumferential spacer means disposed between the inner insulated condutingpipe and the `casing andhaving open spaces V.the're'thrugh through `which the jacket material may be'ilowed longitudinally Within the casing, an anchorage means comprising a metal plate transversely of the conduit unit and having an opening therein through which the conducting pipepasses, said plate being secured to said conducting pip fprevent relative movement therebetween'fand said plate extending radially outwardly beyo'n'dthe diameter of the casing, the

.casing and the moisture impervious jacket having an end terminating short of contact with said plate, a pair of relatively short sleeves of thicker body material than said casing, each of said sleeves atone ofits ends 4'abuttingthe 'respective opposite sides 'of' the plate 'and fait lits opposite end -tel'e'scopin'g fa'n vadjacer'it iend iof `'the casing, said sleeves being A-iinpervio'usly sealedto 5th-e' plate at theirfopposed confronting en'ds andsealed "at their 'opposite ends tothe adjacent basing, and thermal jinsulatio'n within 'isaidsleevs between opposite 'faces ofsazid plate'andthe' respective'adjacent ends of 'the "niois'tureixhpervious jacket.

3. n a conduit "pipefasseriibly ll-iaving an vanchorage plate extending transversely "of the con duit radially outwardly for 'embedding in 2ain lexterior ioundation,a-conduit unit '--includin'gfanfe: teriorly thermally *insulated *conducting pipe Yenclosed in spaced relation tvithirr arelativeiy thin tubular outer casing, 'circumferential vspacer means between the inner thin'ally linsulated conducting pipe "and the outerj casing', the spacer means havingvopenings therethrough 'longitudinally of thecond-uita moistureimperviousjacket in 'the space between the ycasing fand the 'insulated inner conducting pipe;th e`a`nhbrplate'being xedly secured to said conductingpipaand the said casing and vmoisture vimpervious jacket terminating in spaced relation to the'o'pposite sides of the anchor plates, "atubular 'sleeve-oi thicker; body material 'than said easing 4rim-:diy sealed to each offtheoppostefaces'of thean'chor plate and extending "therefrom and vcircumferentially enclosing ftheadjacentend portion-of the thinner 'casing'.andfrnoi'sture impervious jacket and 'thermal insulation within `said vsleeve between theV anchor plate andthe adjacent A'endsfdi the' 'moisture imDsviQusiaQket-- f, ,i l Thomas-1F,- M 'lvvInmAr/rsou. 

